*{
    margin: 0;
    padding: 0;
}

div{ 
    border: 1px none;
}
.leader{
    margin: auto;
    height: 500px;
    width: 1200px;
    border: 3px dotted gray;
    padding: 20px;
}


.left{
    display: inline-block;
    height: 400px;
    width:360px;
    float: left;
    padding:40px 20px;
    
}
li{
    display: inline-block;
    padding: 5px;
    float: left;
}
.center{
    display: inline-block;
    width: 350px;
    float: left;
    padding:50px 0;
    margin: 0 25px;
}

.right{
    display: inline-block;
    height: 400px;
    width:360px;
    float: right;
    padding:40px 20px;
}